Reaction won't occur
Because the activity of Cu is less than Al
Answer:
physical change because even though gas formation was observed the water was undergoing a state change which means that it's original properties are preserved
In a metal, "Electrons" <span> is not given an assigned location and thus can drift
In short, Your Answer would be Option C
Hope this helps!</span>
Helium,it has an atomic mass of 4,which means total no. of protons and neutrons,so I think you meant 2 protons and an atomic mass of 4
